Love is a very important feeling everyone experiences in life, but the word love does not necessarily means romantic attachment. It can be a passion for a specific art or a deep admiration. Mikulincer and Goodman confirm that romantic love is only one of the various types of love that we can encounter. It is the attachment any person can experience in life. Love is the kind of "positive affect or syndrome of emotions, feelings, attitudes, and behaviors."
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The same authors construct a taxonomy of love in order to correctly identify the behavioral differentiations that scientists distinguish.
Moreover, Hal Kelly has observed that "any particular conception or theory of love has associated with it a cluster of ideas that include observable manifestations - actions and feelings - that are the characteristic indications of that kind of love."
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Love is a feeling that is reflected in specific behaviors that we can notice and describe in detail. At this point the act of seeing merges with an emotion as strong and powerful as love. Seeing is the result of what our retina captures of the physical world. Our retina will never construct the image of love because it is not a physical object. However, being in love leads to very specific behaviors that are either physical changes - the person in love shows a relaxed or happy face, or even different attire - and/or attitudes. These are certainly visible, but in order to see such a change, we need to be careful observers. The person who is in love displays certain physical differences that our retina can certainly capture. The analysis of these differences or changes in behavior can result in the conclusion that they are due to an emotion or feeling like love.